The writer will take fans behind the scenes of the Doctor Who 50th Anniversary Special, share the secrets of casting Matt Smith and Peter Capaldi and reflect on the success of Sherlock

Steven Moffat is to take part in an exciting late addition to this year's Cheltenham Literature Festival programme.

The Doctor Who showrunner and Sherlock co-creator will appear in conversation in Sherlock, The Doctor and Me, a special session for Radio Times taking fans behind the scenes of the hotly anticipated Doctor Who 50th Anniversary Special, providing insights into the casting of Matt Smith and Peter Capaldi, and reflecting on the extraordinary success of his 21st-century Sherlock.

The hour-long session takes place at Cheltenham Town Hall at 3:45pm on Sunday 13 October. Tickets, priced at £10, can be purchased via the official Cheltenham Festival website from 12 noon on Sunday 6 October for members and Monday 7 for the general public.

Steven Moffat has been executive producer and head writer on Doctor Who since 2009. The show celebrates its 50th anniversary in November. Moffat co-created Sherlock with Mark Gatiss and won a writing Bafta for his work on the show.